Answer is: tarnishes in air.
A chemical property is any of a substance properties that is obvious after chemical reaction.
Chemical reaction of silver in air: 4Ag + 2H₂S + O₂ → 2Ag₂S (tarnish) + 2H₂O.
Melting point, density and conduction of electricity are physical property. Physical property can be observed and measured without any changes in molecular composition. The same substance is present before and after the change.
yep tarnishes in air is correct because i was on USA TEST PREP and it popped this question and i got it write.
